//
// Created by Administrator on 2021/5/20.
//

#include "iostream"

using namespace std;

int main(){

    int a = 10;
    int b = 1;

    cout << !a << endl;

    cout << !!a << endl;

    cout << (a && b) << endl;

    cout << (a || b) << endl;

    system("pause");

    return 0;
}